I am 5 foot 11 inches tall, and weigh around 270lbs. I would like to lose 80 pounds and get back down to 190, which I was that back in March 2008. I was thinking about going on a water/juice fast, and wondered if anyone had any recommendations on how to do one, how long to do it, what results to expect, etc...I am 24 years old, and was recently dxed with relapsing-remitting multiple scelerosis on April 4th, and just trying to take one day at a time. One thing I need do is lose this gut that I have so I need your help! Thanks.

If it does, it will just be fluids. They are the first to go, and as soon as you stop your body will adjust back to its former levels, so what is the point?
You may also begin to lose muscle mass, which is not what you want either.
If your regular diet is already poor, you well be malnourished, so stopping essential vitamins, minerals and protein and some carbs will make you less healthy.
Remember, the time tested and proven method to healthy weight loss and overall bodily health is to eat a well-balanced, nutrient-dense diet and to partake in regular exercise, and that’s all there is to it!

Cut out soft drinks, alcohol, processed foods, cakes, breads etc. Really cut back on sugar and highly processed carbs. Ensure every meal is nutritious. Hard to do but it's the best way to go.
Don't expect to achieve 100% healthy eating, but aim for 80%.

If you watch any of the TV weight loss shows follow-ups, it is usual to find the dramatic weight loss has been put back, plus a bit more.
If you play around with your metabolism too much, you wreck it, and the body is hard to retrain then.

Yeah I understood a little about what you just said lol. I'm 24 years old newly DXed with MS, I weigh 272 at 5 foot 11, and I need to lose a lot of weight. It's just I don't know where to start, and its so much stress to learn, because I'm learning how this MS stuff works also. So I really don't have a good guide to show me how to eat healthy or what not

Check out our Weight Loss & Healthy Living forum -
For weight loss and healthy living discussions.
http://neurotalk.psychcentral.com/forum42.html

If you haven't yet, you might google: diet for MS

There are no quick fixes, and as my doctor told me, "You didn't put it on overnight, so it's not logical that you'll be able to lose it overnight either."

Plan realistically -- it'll probably take at least as long to take it off as it took to put it on.

Doc